Sennheiser IE900 Brand_Audio-Genetic Biocellulose allows Fostex to keep

Biocellulose allows Fostex to keep the large 50mm driver under control at all times even as frequencies rise

Lina amp outputs in excess of 4 watts with enough current-handling ability for loads like the Abyss AB1266 Phi TC

Tuned for a smooth and detailed midrange

99% pure copper Litz wire 0

yielding the unique blend of the physical characteristics of both earphones and headphones in the former's form factor

Sennheiser IE900 Brand_Audio-Genetic Biocellulose allows Fostex to keepSennheiser is synonymous with history and a tradition of excellence. Now, with IE900, the association's with new ideas and fresh inspiration. It's on Audiophile Heaven's Hall of Fame. Demo with Cayin Audio's RU6, iBasso Audio's DX240 and Questyle Audio's QP2R as instant, synergistic, matches. This historic Head Fi juggernaut stands poised to be a leading light for the next generation, producing the best kind of reference tuned U shape. IE900's treble